1、选修 8 Unit 5 Meeting your ancestors山 东 省 宁 阳 二 中 张 清 勇 PeriodI vocabulary and expressions 教 案Teaching aims:1. Master the new words and expressions.2. Understand and use important language points freelyTeaching important and difficult points: alternative accuracy interrupt assume regardless sharpen am
2、ple primitive preserve botanical analysis specific specifically category significance somehow systematic yogurt radioactive radioactivity applaud accelerate arrest relief division patient skilful punctuation regardless of cut up look aheadTeaching methods: 1.Teacher acts as a director,while students
3、 are the master of class.2.Students work alone,together to make a thorough enquiry with oneself,each other and teacher.(三 探 一 练 -四 步 教 学 法 )Teaching procedure:STEP I. Leading to the lessonCheck up some vocabulary and expressions,let students do them one by one.1.可能的选择 _ 2.试探性的，不确定的 _3.精确;准确 _ 4.打断；打
4、岔 _5.假定;设想 _ 6.不管；不顾 _7.厘米 _ 8.锋利；尖锐 _9.充足的 _ 10.原始的 _11.保存 _ 12.植物学 _13.分析 _ 14.确切的；特定的 _15.种类；类别 _ 16.意义；重要性 _17.有系统的 _ 18.鼓掌欢迎 _19.加速;促进 _ 20.逮捕；拘留 _21.晕眩的 _ 22.减轻；解除 _ 23.分配;划分 _ 24.喜爱 _25.耐心的,忍耐的_ 26.有技巧的 _27.标点符号 _STEP 2. Pronunciation correctingRead after the teacher or the tape twice. Then t
5、he teacher asks the students to read words by themselves.STEP3. Skills in memorizing the new words and make a thorough enquiry (students work together,students and teacher work together.)(1).The teacher analyses the structure and usage of the new words briefly.(make a thorough enquiry.)(2).Make a th
6、orough enquiry to important and difficult points with students1. Can you think of alternatives we would use today?你能想出我们今天会用到哪一种吗？【例证分析】alternative n.选择对象 have no alternative but to do sth.:只能做某事We have no alternative but to go on.除了继续下去,我们没有选择的余地。There was no other alternative but to fight till the
7、 victory.除了战斗直到胜利,别无选择。【合作探究】我没有钱，所以，我没有选择，只好呆在家里。I had no money, so I _.这条路被堵塞了，我们不得不走另一条路。The way was blocked, so we had to go by _.【思维拓展】alternative n.C可能的选择，可能性之一。近义词，choice。adj. 选择性的, 二中择一的另一种方式：alternative means; 另择群体:the alternative society这条路被堵塞了，我们不得不走另一条路。The way was blocked, so we had to
8、go by _.alternative v.交替；轮流 alternatively adv.交替地，作为另一种选择的【实战演练】In this school, the students have three_courses,and seven_ courses.A. required; alternative B. Requiring; alternativeC. required; alternate D. Requiring; alternate2. Try a tentative guess about what Peking Man might have done and used t
9、housands of years ago.暂且猜猜几千年前“北京人”可能做的事情和用的东西。【例证分析】tentative adj. 试验性的, 试探的, 尝试的, 暂定的，在句中作前置定语和表语。a tentative schedule. 是个试验性的计划【合作探究】We have _to meet next month. 我们暂约定下月见。我只能给出一个不确切的意见。_我的看法仅作尝试。_思维拓展作尝试性的出价、建议：make a tentative offer ;获得暂时的结论：come to a tentative conclusion3. I am sorry to interru
10、pt you but how could he live here?对不起，打断一下，但是，他们是如何生活在一起的呢？【例证分析】interrupt v 中断，打扰，打断，插嘴Rain interrupted our baseball game.下雨中断了我们的捧球比赛。The baby interrupted me while I was on the phone.我在打电话时，婴儿干扰了我。Traffic in the city was interrupted by a snowstorm. 市内交通被暴风雪所阻断。It is rude to interrupt.打断别人的话，是不礼貌的。
11、“Dont interrupt,”he said. 他说：“别插嘴” 。【合作探究】他中断大学学业到军队去服役。_我忙的时候，请不要来打扰我。_在别人讲话的时候插嘴是不礼貌的。_你继续讲下去，我不想打断你说话。_【思维拓展】interrupt sb/sth with sth. 用打扰/ 打断interrupter n.造成中断或中止的人或事物interruption n.U中断、中止 C阻碍物，障碍物4. So it is reasonable to assume they lived in these caves, regardless of the cold.因此，我们假想他们不顾寒冷而住
12、在这些山洞里是合情合理的。【例证分析】assume v.假定，以为；装作，担任，承担。后多跟宾语；宾语+to be +n./adj 或 that 从句。I assume you always get up at the same time.我想你总是在同一个时间起床。【合作探究】我假定那是错误的。_我来承担责任。_他装出国外腔调，但我们仍听出来了。_我想是这样的。_【思维拓展】suppose 近似于 think,但含有不确切之意，比 think 缺少根据guess 凭想象加以猜测imagine 想象fancy 凭空想象【例证分析】 regardless adj.（与 of 连用）不管的；不顾的
13、He says what he thinks, regardless of other peoples feelings.他怎么想就怎么说，不考虑别人的情绪。regardless of 不注意、不顾、不管【合作探究】他不注意自己的外表。_他不顾危险地去了。_【思维拓展】近义词/短语：disregarding /in spite of 三者意义和用法相同，区别不大。regardless adv.无论如何；不管；不顾I must make the decision regardless.不管怎样我得做决定。 regardlessness n. 不注意。【实战演练】I assumed him to
14、be able to read. Which of the following words can replace the word “assume”?A. considered B. found C. proved D. promised5. It seems that they might have used sharpened stone tools to cut up the animals and remove their skin. 看起来他们可能是用尖锐的石器切开动物，把他们的皮剥下来。【例证分析】sharpen v.使变得锋利；变得清晰 ;变得尖锐，变得刺耳。【合作探究】他正在
15、削铅笔。_随着天色转亮，树的轮廓也变得清晰了。_他在变得不耐烦时，说话的声音也变尖了。_【思维拓展】sharp adj.1)锐利的， 锋利的，尖的a sharp knife 锋利的小刀a needle with a sharp point 针头尖利的针2)思维敏捷的；目光敏锐的； 听觉灵敏的sharp eyes 灵敏的眼睛The famous writer is still sharp in thought though he has attained the age of ninety-two.这位著名作家虽已九十二岁高龄,但仍然思维敏捷。sharp adv.1)准时地；整at seven
16、oclock sharp 七点整2)突然地，急剧地turn sharp to the left 猛然向左转【合作探究】cut up 切碎；使伤心，严厉批评彼得，为何不把蔬菜切碎呢？_-爱丽丝丢了钱，她伤心极了。_红军很快摧毁了敌军。【思维拓展】由 cut 组成的常用词组：cut off 切断；剪掉cut down vt.砍伐;削减cut in 打断 Dont cut in while Im talking. 我说话时别插嘴。6.-Did early people really care about their appearance like we do?-Yes and so well pre
17、served.早期人类也象我们一样讲究外表吗？是的，还保存得很好呢。【例证分析】preserve v.保护、维持、保存You can preserve meat or fish in salt. 你可以用盐保存肉或鱼。It is one of the duties of the police to preserve public order.警察的职责之一是维持公共秩序。【合作探究】警察维持着街道的秩序。_盐腌制着食物以免变质。_这个花瓶保存得完好无损。_【思维拓展】preservable adj.可保存的 preservation n.保存 preserver n.保护者，保存者【实战演练】
18、In spite of failing to save every endangered species, we may preserve the majority_ extinction.A. against B. with C. beyond D. from7. As his university was aware of the significance of his work他在大学时代就意识到工作的重要性。【合作探究】significance n.意义，重要性。无关紧要的事情_重大的演讲_-含义深刻的一瞥_这是具有重要意义的一件事情。_【思维拓展】significant adj.有特
19、殊意义的，重大的 a significant speech 意味深长的讲话significantly adv.有意义地，重要地【同义辨析】：importance ,consequence and significanceimportance: 一般用语，着重指本身具有重大价值、意义、影响等。例如：news of great importanceconsequence 侧重指具有或可能有重要或深远的后果。例如：You must be ready to take the consequence.你必须准备自食其果。significance 指马上显示其特殊重要意义。例如：an event of s
20、ignificance 重要新闻an abstract idea 抽象概念8. Somehow, he cycled thirty miles他设法骑车 30 英里。 。 。【合作探究】somehow adv. 以某种方式，以某种方法；莫明其妙地；不知怎么地他不知道怎么竟迷了路。_不知怎么地，我不喜欢这种方式。_我们必须设法在 10 点以前赶到哪里。_【习惯用语】somehow or other 不知是什么原因，由于某种原因，以某种方式Somewhat adv.有几分，略，稍I was somewhat surprised. 我有点惊讶。9. She had felt so proud as
21、the group shouted loudly to applaud his choice.当部落成员为他的选择大声喝彩时，他感到很自豪。【合作探究】applaud v. 球迷当主队得分时欢呼。10. Lala accelerated her walk up the path to the caves fearing that there might be wild animals lying in wait for her.拉拉加快了去往山洞的步伐，担心会有野兽躺在路边等着她。【合作探究】accelerate v.加速，促进加速_他决定增加广告的数量。_这是一种用以加大火势的物质。_11.
22、 She had almost reached her destination when a delicious smell arrested her progress and she stopped.快到目的地的时候，一阵香气扑鼻，她不往前走了，停了下来。【合作探究】destination n.目的地到达目的地_东京是我们最终的目的地。_我们花了一整天，才到达目的地。_arrest v. 吸引注意力，阻止，妨碍The criminal was arrested yesterday. 罪犯昨天被捕了。止血_惹人注目_警察逮捕了小偷。_花的艳丽色彩引起了苏珊的主意。_【实战演练】The agen
23、t was_for carrying a false passport.A. arrested B. accused C. charged D. suspected12. Lala smiled with relief.拉拉轻松地笑了。【合作探究】relief n.减轻，解除I felt great relief when I heard I had passed the examination.听说我已经通过了考试，感到轻松多了。这种药可以减轻一些痛苦。_我最庆幸的是没有迟到。_见到你在这儿，也就放心了。_【思维拓展】bring /seek/find/give/feel relief 带来/
24、寻求/ 得到/予以/ 感到解脱relief road 备用车道relief map 地形图relieve v. relieve ones feelings 发泄感情【实战演练】Hearing the news that her son was found, she breathed a sigh of_.A. excitement B. joy C. relief D. beliefSTEP 4. Consolidation of the words and expressions to do the synchronous exercises.STEP 5. Homework 1. Lear
25、n all the words and expressions by heart. 2. Preview the text and finish discovering useful words and expressions.参考答案;1. had no alternative but to stay at home alternative road A2. made a tentative arrangement I can only give a tentative opinion。 My opinion is only tentative.3. He interrupted colle
26、ge to serve in the army.Dont interrupt me when I am busy.It is not polite to interrupt when someone is talking.Go on, I dont want to interrupt.4. I assume it to be wrong.I assumed the responsibility.She assumed a foreign accent, but I still recognized her.I assume that it is so.He is regardless of h
27、is appearance.He went regardless of the risk.A5. She is sharpening a pencil.The outline of the trees sharpened as it grew lighter.His voice sharpened as he became impatient.Peter, why not cut up vegetables?Alice was badly cut up by losing the money.The Red Army soon cut up the enemys forces.6. Polic
28、emen preserve order in the streets.Salt preserves food from decay.The vase has been preserved intact.D 7. a matter of little significance a speech of great significancea look of deep significanceIt is a matter of great significance.8. He somehow got lost.Somehow I dont like this way.We must get ther
29、e before ten somehow.9. Everyone applauded when the play ended.I applaud your decision.We applauded him for his bravery.10. accelerate the speedHe decided to accelerate his advertising.It is a kind of substance used to accelerate a fire.11. arrive at/reach ones destination Tokyo is our final destination.It took us a whole day to arrive at the destination.arrest the bleeding of the bloodarrest sbs eyesThe policeman arrested the thief.The bright colors arrested Susans attention.A12. The drug gives some relief from pain.To my great relief, I wasnt late.Its a great relief to find you here.C
